What is the function performed in the masked area?
A. Mask is used to “neglect” the selected area “with no detection.” For example, wind blowing on tree leaves, causing the surveillance system to judge that as a motion being detected and thus sets off the alarm. This is a waste of computer resources. To avoid this situation, users should use the Mask function to exclude any specific area from detection. Q28. In the alarm setup screen, I can set the alarm to call out when it is triggered. Why only one alarm device performs call-out function and the other does not although both of them are triggered at the same time? A. This is because one of the alarms is triggered repeatedly and results in the continuous modem call-out requests. You have to wait until the first alarm stops, and the system has finished all call-out requests; then after around 10-20 seconds, the system will begin to execute the other alarm call-out request.
